fieker-DuValspielwiese
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Last change
on this file since 7d6820 was
db143c,
checked in by Hans Schoenemann <hannes@…>, 5 years ago
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integrate xalloc into omalloc (./configure --disable-omalloc)
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-
Property mode set to
100644
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File size:
2.5 KB
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| 1 | /******************************************************************* |
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| 2 | * File: omGetBackTrace.c |
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| 3 | * Purpose: routines for getting Backtraces of stack |
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| 4 | * Author: obachman (Olaf Bachmann) |
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| 5 | * Created: 11/99 |
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| 6 | *******************************************************************/ |
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| 7 | #include "omalloc/omConfig.h" |
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| 8 | |
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| 9 | #ifdef HAVE_OMALLOC |
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| 10 | #ifndef OM_NDEBUG |
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| 11 | |
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| 12 | #if __GNUC__ > 1 |
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| 13 | |
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| 14 | static void* om_this_main_frame_addr = 0; |
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| 15 | |
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| 16 | void omInitGetBackTrace() |
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| 17 | { |
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| 18 | if (__builtin_frame_address(0) != 0 && |
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| 19 | __builtin_frame_address(1) > __builtin_frame_address(0)) |
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| 20 | om_this_main_frame_addr = __builtin_frame_address(1); |
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| 21 | } |
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| 22 | |
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| 23 | #define OM_GET_BACK_TRACE(j) \ |
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| 24 | case j: \ |
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| 25 | { \ |
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| 26 | f_addr = __builtin_frame_address(j); \ |
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| 27 | if (f_addr > this_frame && f_addr < om_this_main_frame_addr) \ |
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| 28 | { \ |
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| 29 | r_addr = __builtin_return_address(j); \ |
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| 30 | if (r_addr) \ |
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| 31 | { \ |
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| 32 | bt[i] = r_addr; \ |
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| 33 | i++; \ |
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| 34 | if (i >= max) break; \ |
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| 35 | } \ |
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| 36 | else break; \ |
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| 37 | } \ |
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| 38 | else break; \ |
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| 39 | } |
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| 40 | |
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| 41 | int omGetBackTrace(void** bt, int start, int max) |
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| 42 | { |
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| 43 | int i = 0; |
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| 44 | void* this_frame = __builtin_frame_address(0); |
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| 45 | void* f_addr; |
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| 46 | void* r_addr; |
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| 47 | |
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| 48 | start++; |
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| 49 | |
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| 50 | switch(start) |
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| 51 | { |
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| 52 | OM_GET_BACK_TRACE(1) |
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| 53 | OM_GET_BACK_TRACE(2) |
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| 54 | /* the following fails on Mac OsX, but the debugging |
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| 55 | * support it provides is too useful to disable it |
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| 56 | */ |
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| 57 | #ifdef __linux |
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| 58 | #if defined(__x86_64) || defined(__i386) |
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| 59 | OM_GET_BACK_TRACE(3) |
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| 60 | OM_GET_BACK_TRACE(4) |
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| 61 | OM_GET_BACK_TRACE(5) |
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| 62 | OM_GET_BACK_TRACE(6) |
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| 63 | OM_GET_BACK_TRACE(7) |
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| 64 | OM_GET_BACK_TRACE(8) |
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| 65 | OM_GET_BACK_TRACE(9) |
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| 66 | OM_GET_BACK_TRACE(10) |
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| 67 | OM_GET_BACK_TRACE(11) |
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| 68 | OM_GET_BACK_TRACE(12) |
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| 69 | OM_GET_BACK_TRACE(13) |
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| 70 | OM_GET_BACK_TRACE(14) |
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| 71 | OM_GET_BACK_TRACE(15) |
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| 72 | OM_GET_BACK_TRACE(16) |
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| 73 | OM_GET_BACK_TRACE(17) |
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| 74 | #endif |
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| 75 | #endif |
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| 76 | } |
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| 77 | if (i < max) bt[i] = 0; |
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| 78 | return i; |
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| 79 | } |
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| 80 | |
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| 81 | #endif /* __GNUC__ > 1 */ |
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| 82 | |
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| 83 | #endif /* ! OM_NDEBUG */ |
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| 84 | #endif |
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